Alan Shatter must give a full account of what happened when he was pulled over at a Garda checkpoint, he was told today.

Damning new claims have come to light about the night the then-Fine Gael backbencher was stopped by the cops.

It is claimed the now Justice Minister asked a female garda 'Don't you know who I am?' and told her to check the law.

The incident took place at a Garda checkpoint in Dublin in 2008 or 2009 and was initially raised in the Dail by Independent TD Mattie McGrath.

Mr Shatter has denied there was any report on the incident after the Garda Commissioner checked the system.

But Fianna Fail's spokesman for justice Niall Collins said Minister Shatter has a lot of questions to answer.

He said: "It raises serious questions in relation to his judgement. If the Minister was behaving like this at a Garda checkpoint, that compounds the situation even further.

"We also have the issue of citing Constitutional privilege, that hasn't been dealt with by the Minister either.

"It was a double lock situation. He mentioned he had asthma and he also mentioned he was travelling from the Dail.

"All these questions are now arising and the Minister has to deal with this tonight."

Mr Collins urged the Labour party to break ranks and support the Fianna Fail motion.

He said:"Government backbenchers who had briefed the media about their unhappiness with Shatter's comments when they thought it would get them some publicity, have now gone to ground.

"I would appeal to all those Government TDs who still believe in the principle of ministerial accountability, despite the Government's massive majority, to show some character and support the Fianna Fáil motion of no confidence this week."

Taoiseach Enda Kenny said he has full confidence in the Minister and would fully support him tonight.

Earlier Minister Shatter claimed there was no Garda record of the checkpoint incident involving him a number of years ago.

The Minister issued a statement saying that the Garda Commissioner Martin Callinan had confirmed that no Garda record exists detailing it.

He said: "Following on from the issue raised in the Dáil last week by Deputy Mattie McGrath, the Secretary General of the Department of Justice and Equality asked the Garda Commissioner to ascertain whether there was a garda report on the matter.

“The Commissioner has confirmed that he caused enquiries to be made by local Garda management as to whether or not a report of the incident was made at the time.

"He is informed that no such report was generated by the Garda member involved and a further local search of the garda computer system has failed to locate any such report.”